NPPES file of Aug 9, 2026

Katherine Jean Robertson, PH.D.

Psychologist · Jamestown, CA

Katherine Jean Robertson, PH.D. is a psychologist with a practice address in Jamestown, California, and NPI 1891754255, issued on Mar 22, 2006. Check the license (California PSY21877, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1891754255
Name
Katherine Jean Robertson
Credential
PH.D.
Primary taxonomy
Psychologist 103T00000X
License numbers
PSY21877 CA
PY00002362 WA
Self-reported in NPPES; status is on the state search
Practice location
5100 Obyrnes Ferry RD, Jamestown, CA 95327
Phone
(209) 984-5291
Enumerated
Mar 22, 2006
Record last updated
Feb 14, 2013 (not updated in 13 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 5100 Obyrnes Ferry RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Roger Anderson, DDSDentist1669652350
  2. Nancy Brace, DDSDentist1780864371
  3. Gary Collinsworth, RPHPharmacist1659628287
  4. John Gonsalves, PHARM DPharmacist1881959369
  5. Richard Halliburton, PSYDClinical Psychologist1831625102
  6. Blong Ly, DDSDentist1255302022

Verify Katherine Jean Robertson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license PSY21877
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

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2 psychologist records list a practice address in Jamestown

They are 2 of the 45 NPPES records with a practice address in Jamestown, and 7,304 psychologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other psychologist records in California

  1. Alice Abarbanel, PH.D.Albany, CA1598095002
  2. Michael Abbott, PSYDModesto, CA1346498151
  3. Riley AbelesLos Angeles, CA1841861945
  4. Jenna Abell, PSYDLos Angeles, CA1073743969
  5. Sheri Abercrombie, PSY.D.San Diego, CA1932292422
  6. Tseday Aberra, PSY.D.Corona, CA1104026517
  7. Elham Abouhamzeh, PSY.DIrvine, CA1386092880
  8. Lilit Abraamyan-ChaidezBurbank, CA1710433289
  9. Mackenzie Abraham, PHDRedondo Beach, CA1881053833
  10. Sandra Abraham, PSYDSanta Fe Springs, CA1427467851

Common questions

What is Katherine Jean Robertson, PH.D.'s NPI number?

Katherine Jean Robertson, PH.D.'s National Provider Identifier (NPI) is 1891754255, issued on Mar 22, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Katherine Jean Robertson, PH.D. located?

The NPPES record lists a practice address at 5100 Obyrnes Ferry RD, Jamestown, CA, 95327. Phone: (209) 984-5291. Providers update this record themselves, so call before visiting.

How can I verify Katherine Jean Robertson, PH.D.'s license?

NPPES lists California license number PSY21877, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.